1 files changed, 0 insertions, 53 deletions
diff --git a/spi_usi.h b/spi_usi.h
deleted file mode 100644
index 900999f..0000000
--- a/spi_usi.h
+++ /dev/null
@@ -1,53 +0,0 @@
-#include <stdio.h>
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include <inttypes.h>
-
-#include "mcu/mcu.h"
-
-#ifndef _IOE_SPI_USI_H_
-#define _IOE_SPI_USI_H_
-
-/*
- * Initialize USI as SPI
- *
- * NOTE: Global interrupt must be enabled for right function.
- * { SREG |= _BV(7) }
- */
-inline void ioe_spi_usi_init(void);
-#ifdef IOE_SPI_USI_MASTER
-/*
- * Swaps byte with slave over SPI.
- */
-inline int8_t ioe_spi_usi_transfer(int8_t data);
-#else
-/*
- * Expose data for next master request.
- * Please don't use this when device is busy.
- * Best place to call this is ioe_spi_usi_retrieve().
- */
-inline void ioe_spi_usi_expose(int8_t data);
-/*
- * Returns NULL when device is no busy.
- * When device is busy, returned value is number of already send bits.
- */
-inline uint8_t ioe_spi_usi_busy(void);
-/*
- * Blocks processor until device is not busy.
- */
-inline void ioe_spi_usi_join(void);
-
-/*
- * This function must be defined by user.
- * This function is called every time transfer is finished.
- * And until return from this function interrupts are disabled.
- * WARNING: Please define this function in your code.
- */
-inline void ioe_spi_usi_retrieve(int8_t data);
-#endif /* IOE_SPI_USI_MASTER */
-
-#if !(__MCU_ATtiny4313__ || __MCU_ATtiny85__)
-#error "USI is not probably supported by your MCU."
-#endif
-
-#endif /* _IOE_SPI_USI_H_ */